參數(shù)資料
型號: Pentium III cpu with mobile
廠商: Intel Corp.
英文描述: Pentium III processor Mobile Module Connector 2 (MMC-2)(帶移動模塊連接器2奔III處理器)
中文描述: 奔騰III處理器的移動模塊連接器2(絲裂霉素2)(帶移動模塊連接器2奔三處理器)
文件頁數(shù): 48/64頁
文件大小: 773K
代理商: PENTIUM III CPU WITH MOBILE
Pentium
III Processor Mobile Module MMC-2
42
Datasheet
245304-003
Equation 14.
(The nearest standard 1% value is 66.5 k
. The example will continue with R2= 66.5 k
.)
Rearranging
Equation 8
to solve for C9 yields the following result, as shown in
Equation 15
.
Equation 15.
Now a value for C9 can be calculated. See
Equation 16
below.
Equation 16.
C 9= 0.354
μ
F
(A close standard value of 0.33
μ
F will yield a t_delay of 466.0
μ
S.)
The ramp-up time, t_ramp, is defined as shown in
Equation 17
below.
Equation 17.
If M1 has a VGS(sat) of -2.4V, then see
Equation 18
below.
Equation 18.
t_ramp = 948.8
μ
S
The maximum current during the power-up ramp is shown in
Equation 19
below.
Equation 19.
If the total capacitance, Ctotal on the V_DC bus, is 119.4
μ
F, then see
Equation 20
below.
Equation 20.
Imax = 0.994A
From the values assumed and calculated, t_delay = 466.0
μ
S, t_ramp = 949.0
μ
S, and Imax = 944
mA.
R2
VgR16
V_DC Vg
,
R2
66.67k
=
C9
t_delay
R2 ln 1
Vt
V_DC
Vg
t_ramp
R2 C9
ln 1
.
Vsat
Vgs
t_delay
Imax
Ctotal
t
v
d
d
CtotalV_DC
t_ramp
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